Milk-bottle cap



9 1927' B. KUHNE MILK BOTTLE CAP Filed March 10. 1926 Patented Aug. 9,1927.

' iiiv 1,638,489

UNITED STATESQPATENT, OFFICE;

' BEAT KUHNE, OF LEWISTOWN, MONTANA.

MILK-BOTTLE GAP.

Application 'filed March 10, 1926. Serial No. 93,729.

The present invention relates to improvements in closures for containerssuch as milkbottles and the like; and the primary object of theinvention is to provide a novel type otmilk bottle cap embodyingfeatures whereby a portion outwardly of the remainder of the cap may beswung of the cap in a manner for providing an opening through which-allor a portion of the contents of the bottle may be poured or withdrawn;

whereby from the mouth of quiring of a special instrument of any char-;

the disc may be readily withdrawn the bottle without the reacter beingemployed for removal of the cap from the bottle.

A still further object of the invention is permit of the to so constructthe cap being placed in position in cap as, to

the mouth of apmilk'bottle as by the standard capping machines now inuse.

A still fu'rther'object of-the inventlon 1s to: provide a novel type ofmilk bottle capembodying a tab so associated with the cap astopreventpossible'separation of the tab from the cap when a pull isexerted on the Other objects and advantages of the invention will'beapparent during the course of the following detail description, taken inconnection with the accompanying drawlng forming a part-of which drawingFigure 1 is a through theupper this specification and in centralvertical section portion of a milk bottle and-showing a cap constructedin accordance with my lnvention,

for closing of the bottle.

and in a position Figure 2 is a v to Figure 1: but 'sho swung upwardlyan opening in of example, a like inserted for withdrawing bottle.

Figure improved 1 Figure 4 is a b0 the same; i;

the cap, and showing fragment of a straw or through the opening in thecap of the contents. of the in central section,

iew substantially similar wing a portion of the cap to a position forproviding 3 is atop perspective view 'of'the cap as shown in Figures 1and 2. ttom perspective viewof Figure 5 is an enlarged fragmentarysectlon on line 5-5 of Figure 3, and looking 1n the direction ofthearrows.

Flgure 6 is a bottom plan view of a slightly modified form of theinvention, such type being of a class whereby the whole closure dlscwill be withdrawn fromthe bottle upon thev exertlng of a pull upon thepull tab.

Figure 7'is an enlarged fragmentary sect1on on the line 77 of Figure 6.l n Figure 8 is a still further slightly modified form of the invention,and showing the slits to each side of the pull tab extending from thetop to the bottom surfaces of the closure disc.

In the drawing, and wherein similar reference characters designatecorresponding parts throughout the several views, the letter A maydesignate a milk bottle of ordinary construction, vided at their upperends with an inwardly disposed annular seat or flange 10 and upon whichthe cap or closure is adapted to seat.

'The cap as shown, and which may be formed of paper, pulp board, or anyother deslredmaterial suitable for the purpose, embodies a circularclosure disc 12 and pull tab or flap 13 by whichthe closure disc may bewithdrawn from the mouth of the bottle A. The closure disc 12 hasprovided in its bottom side, a depression 14 having its side edgesextending in diverting relation from the peripheral edge of the closuredisc to a point relatively near the center of the disc. This depression14 may either be formed by compressing a portion of the closure disc,or'if desired a portion of the disc may be out out for providing thedepression. Extending upwardly through the closure disc, and along eachof the inwardlydiverging side walls formed by the depression 14, areslits or score lines 15 which extend throughout the entire length of'thedepression and terminate just below thetop surface of the disc as isclearly illustrated in Figure 5. These inwardly diverging slits 15outline a lip 16 which is adapted to be swung upwardly from theperipheral edge of the disc and bend on the line;17 extending betweenthe inner ends of the slits. Thus it will'be seen that the lip 16 is ofless width atthe periphery of the! disc than at its inner end or bendline por tioin Byso having the slits or score lines and which bottlesare pro- 15 terminate slightly below the top surface of the disc, itwill be seen that the closure disc will serve as an etlicient sealingcap for the bottle, having no depressions or score lines of anycharacter provided on the top surface of the cap and into which foreignnatter accumulates and consequently becomes mixed with the contents ofthe bottle when the lid is swung outwardly for permitting of thecontents being poured from the bottle. By so constructing the cap as toprovide a perfectly smooth top surface, the top surface of the cap maybe thoroughly cleaned before swinging of the lip to provide an openingthrough which the contents of the bottle may be poured or withdrawn. Itwill be observed that the clepression 1 1 is of substantially isoscelestrapezoidal shape, having its base line of least dimension disposed atthe periphery of the closure disc.

Referring now to the pull tab or flap 13, and which may be formed of anysuitable material impervious to noisture, such as fiber board or thelike, the same is of sub stantially triang ilar shape in plan, and of athickness equal to the depth of the depression i l. This tab 13 isadapted to have its base portion 18 fit snugly within the depression 14and be secured to the closure disc as by a suitable adhesive or as inthe example shown as by a staple 19 which extends upwardly through thelip portion 16 of the closure disc. This staple is disposed transverselyof the base portion 18 and in parallel alignment with the bend line 17of the lip. The tab 18 extends past the periphery of the closure disc asclearly illustrated in Figures 3 and 4, for providing a grip portion 20which when the closure disc is resting upon the seat 10 of the bottle A,will extend upwardly between the periphery of the closure disc and theneck portion of the bottle in a manner to be readily grasped whendesiring to raise the lip 16 for withdrawing of the contents of thebottle.

In operation, and referring particularly to the form of invention asillustrated in Figures: 1 to 5 inclusive, the grip portion 20 whichextends upwardly past the top edge of the bottle, may be grasped betweenthe thumb and forefinger and upon upward drawing of the same, the uncutportions 22 disposed to each longitudinal side of the lip 16, will besevered thus allowing the lip to swing upwardly about the bend line 17and providing an opening in the closure disc through which the contentsof the bottle may be poured, or into which opening a straw 50 maybeinserted as shown in Figure 2. It will be observed that upon upwardpulling of the tab, that a lateral strain will be transmitted to thestaple 19 and which lateral strain upon the staple will preventliability of the staple being withdrawn from the lip 15, and whichwithdrawal of the staple would be likely to hap-' pen were a direct pullexerted upon the staple.

l'Vith the form of invention illustrated in Figures and'T, and whichform is intended for use when it is desired to. withdraw the whole ofthe closure disc from the bottle, the same is provided withthe usualdepression in its bottom side but no cuts or score lines are formed inthe disc to each side of the pull tab. that with this type, when a pullis exerted upon the tab '13 the whole portionof the closure discadjacent the pull tab will be.

raised and not merely that portion lying above the base'portion of thetab.

Vfith reference tot-he form as shown in Figure 8, it will be observedthat the slits 15 which are disposed at each longitudinal edge of thedepression 14, extend clear through the closure disc inupwardlyconvergin relation to one another. By so having the slits 15extend upwardly in converging relation to one another, it will be seenthat when the closure disc is positioned in the mouth of the bottle,that a substantially dove-tail lit will "e provided at the side edges ofthe lip 16 and thus prevent ready upward swinging of the lip due to thewedging action formed by the inclined slits. The lip will be preventedfrom being forced inwardly by reason of the base portion 18 of the tabseating at its outer portion upon the seat 10 of the bottle. It ispreferred that a coating of paraflin be placed upon thecap for sealingthe upper and lower ends of the slit l5.

By so having the slits extend inwardly from the periphery of theclosure'disc in diverging relation to one another, it will be observedthat the grip portion 20 of the tab need not be of a width to preventproper positioning of the disc u on the seat- 10, and that a substantialportion of the lip 16 remains integral with the main body portion of theclosure disc along the bending line 1? for preventing possible tearingor severing of the lip from the remainder of the'disc when removing theclosure disc in its entirety from the bottle. 4

It will'readily be apparent that the object in so forming a depressionin the bot-tom portion of the closure disc for receiving the tab 13,permits of an even or smooth bottom surface being provided for flushseating upon the seat 10 of the bottle.

From the foregoing description it will be apparent that a novel cap formilk bottles has been provided embodying a closure disc having a tabportion so disposed and 'connected thereto as to preventpossiblesevering of a lip portion of the closure disc from the main bodyportion thereof when a pull Thus it will be seen is exerted on the tabfor partially or fully removing the closure disc from the milk bottle.

Changes in detail may be made to the forms of the invention herein shownand'described, without departing from the spirit of the invention or thescope of the following claims.

I claim:

1. A bottle cap comprising a closure disc having score lines provided atits under side and extending in diverging relation from the periphery othe disc, and a triangular shaped tab secured by its base portion to theunder side of the disc between said score lines at a point spaced asubstantial distance inwardly from the peripheral edge of the disc.

2. A bottle cap comprising a closure disc provided at its under sidewith a depression having its side edges extending in diverging relationfrom the periphery of the disc and having score lines extending upwardlyin the disc at each side edge of the depression, and a triangular shapedtab fitting in the depresslon and secured to the closure disc.

3. A bottle cap comprising a closure disc having a depression ofsubstantially isosceles trapezodial shape in plan provided in its underside and having the base portion of least dimension disposed at theperiphery of the disc, and a tab of substantially triangular shapehaving its base portion fitting in the depression and secured to thedisc by a staple extending in parallel relation with the inner largerend of the depression.

4. A bottle ca comprising a closure disc having a depression provided inits under side and score lines at each longitudinal edge of thedepression extending upwardly to a position relatively near the topsurface of the disc, and a tab having a base portion of likeconfiguration as that of said depression, fitting in the depression andsecured to the closure disc and having a grip portion extending past theperiphery of the 5. A bottle cap comprising a closuredisc having a lipprovided in the peripheral portion thereof by slits extending inwardlyfrom the periphery of the disc in diverging relation to one another, anda tab se cured to the underside of the lip at a point nearer the inner.end ofthe lip and having a portion, extending past the periphery of thedisc. I

BEAT KUHNE.

